baber/WOPTO huggingface dataset:
Patent GB-604720-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H04M9/00
Filed: 1945-12-01
Abstract: 604,720. Loud-speaking systems. SLAFFER, M. Dec. 1, 1945, Nos. 32524/45 and 448/46. [Class 40 (iv)] In an interconnection system comprising two loud-speakers, one of which normally acts as a microphone so that local signals picked up by it are reproduced in the other speaker superimposed on incoming wireless signals, means are provided whereby the function of the two loud-speakers may be interchanged. A second arrangement comprises two loud-speakers, one of which is the internal speaker of a wireless receiving system while the other is a remotely disposed extension speaker, means being provided whereby the internal speaker may be employed as a microphone and local signals picked up thereby reproduced in the extension speaker, further means at the extension speaker serving to change over the function of the two loud-speakers, thus allowing two-way intercommunication between them. As shown in Fig. 1, a wireless receiving set has three loudspeakers, one internal, L1; and two extension, L2, L3, of which L2 is normally employed as a microphone. With switch SW2 normal and SW1 up, the output of the set is applied to L1 and L2, while L3 is connected to the input winding of microphone transformer T so that signals picked up by it will be reproduced in L1 and L3 superimposed upon the wireless set output. Throwing switch SW2 down connects L1 to T so that speech picked up by it is reproduced in L3, while throwing SW1 down allows speech in the reverse direction. On the other hand, throwing SW2 up not only connects L1 to T but connects L2 to the output so that signals from L1 are reproduced in both external speakers. Throwing SW2 either up or down also short-circuits the wireless set input to eliminate the radio programme during intercommunication. In modifications, Figs. 3 and 4 (not shown), arrangements are made for automatically attenuating the output due to incoming wireless signals when local signals are picked up by one of the speakers acting as a microphone either by rectifying a portion of the local signal and applying it as back bias to the radio set amplifying stages, or by inserting a static modulator, which is rendered non- conducting by the local signals, in the wireless receiving set.
Patent GB-1102644-A (GB)
Title: Method of making an inflatable athletics ball
IPC: A63B41/08
Filed: 1966-07-20
Abstract: 1,102,644. Athletic ball. GENERAL TIRE & RUBBER CO. 20 July, 1966 [9 Aug., 1965], No. 32615/66. Heading A6D. An athletic ball comprises an air-impervious bladder 3 covered with a cord winding 5 on which is superposed a plurality of shaped precured elastomeric panels 11 secured to the winding 5 by means of an adhesive. The ball may be a basket ball, a volley ball or a football and the surface of the panels 11 may be varied in accordance with the intended use of the ball. Specific details are given of the manufacture of the ball by generally known processes.
Patent GB-1426085-A (GB)
Title: Slit lamp microscope assembly
IPC: A61B3/14
Filed: 1973-07-09
Abstract: 1426085 Eye-examining apparatus OPTISCHE WERKE G RODENSTOCK 9 July 1973 [10 Feb 1973] 32618/73 Heading G2J A slit lamp microscope assembly for eye examination has, on the object side in front of the microscope 1, a device 2 which bends the optical axis of the observation ray path 4 away from the axis of the microscope as at 5 and then on to the eye being examined at 6. The device comprises two mirrors or two or more reflecting surfaces in a prism. As shown the prism 2 has two reflecting surfaces and is horizontally hinged at 3 to a plate 9 detachably connected to the microscope, so that as shown the eye is viewed at an angle without shifting eye or microscope while on hinging the prism upwards, the eye is viewed directly along line 6,4. The plate 9 may carry the hinged portion of the device rotatably on a vertical spigot which allows other apparatus to be secured thereto or the plate may carry a photographic attachment. The device may be slidably or magnetically attached to the microscope.
Patent GB-888951-A (GB)
Title: Partial-admission turbines
IPC: F02C7/12
Filed: 1960-09-22
Abstract: 888,951. Elastic-fluid turbines. KLOCKNER - HUMBOLDT - DEUTZ A.G. Sept. 22, 1960 [Sept. 26, 1959], No. 32659/60. Class 110 (3). In a partial admission axial-flow or radialflow turbine, means are provided for preventing vibration fractures of rotor blades and comprises so shaping the cross-section of the fluid-flow passages in the turbine casing adjacent the inlet to the rotor blades that as the rotor blades enter and leave the admission zone, the working fluid enters the passages between the rotor blades only over a part of the blade height. The cross-section shape of working fluid inlet passages are shown in the Figures. In Fig. 6, for example, the passage would normally extend over the arc subtended by the angle α from the radii # 1  = O to # 3  = α and would be of height h along the whole length of the arc, h being the blade height. But in accordance with the invention, the inlet passage is of reduced height as indicated by the shaded portions from radii # 1  to # 2  where the rotor blades enter the admission zone and from radii # 3  to # 4  where the rotor blades leave the admission zone. The cross-sectional area of the passage increases and decreases in steps in the arrangements shown in Figs. 6 and 7, but in Fig. 8 the cross-sectional area increases gradually to a maximum and then decreases gradually to zero. The inlet passage of a radial flow turbine is shown in Fig. 9, the passage being of reduced area between positions # 1  and # 2  when a blade is entering the admission zone, of maximum area between positions # 2  and # 3  and again of reduced area between positions # 3  and # 4  when a blade is leaving the admission zone.
Patent GB-366128-A (GB)
Title: Improvements in or relating to the preparation of colloidal suspensions in oils
IPC: B01J13/00
Filed: 1930-10-30
Abstract: Solids are treated to enable them to be colloidally suspended in oils, such as hydrocarbons and their halogen substitution products and saponifiable oils, by grinding them with an aqueous solution of a soap i.e. a salt of a higher fatty acid or resin acid capable of dissolving (swelling) in water, and treating the resulting suspension with an agent adapted to precipitate the soap as a coating on the particles, and present in sufficient quantity to coagulate the suspension.  The coated particles are then incorporated with the oil and the associated water eliminated e.g. by drying, or the particles may be dried before incorporation with the oil.  When using soaps like sodium oleate &c., an aqueous solution of a bi- or trivalent metal e.g. calcium chloride or aluminium sulphate is used as the precipitating agent, while for a resin soap an acid such as hydrochloric acid may be used.  The precipitating agent is preferably adjusted to an exact equivalent of the acid present in the soap.  The substances to be treated may be ground in any of the known colloidal apparatus with the aqueous soap solution, or a paste consisting of the substance to be treated, soap and water may be passed through a colloid mill as in the Pigache process, and suspended in water so that the suspension is not viscous at ordinary temperatures.  In an example, powdered graphite is mixed with sodium oleate and made into a colloidal suspension.  The soap is coagulated by means of aluminium sulphate, and the coated particles, after washing with water, are incorporated in mineral oil to produce a suspension containing 10 or 15 per cent of graphite, which is then heated with stirring to remove water.  Specification 8641/15, [Class 1 (i), Chemical processes &c.], is referred to.
Patent GB-845393-A (GB)
Title: Process for the manufacture of steel in a converter
IPC: C21C5/32
Filed: 1958-10-15
Abstract: Pig iron is refined by surface blowing with a lance provided with two concentric passages, dephosphorizing additions being injected on to or into the melt through the inner passage during the whole or a part of the operation, while an oxidizing gas without dephosphorizing agents and at low pressure or velocity is injected during the whole or part of the operation from the outer passage.  The gas used by be commercially pure oxygen and the dephosphorizing agent lime which may be added in such proportions to give the mixture issuing from the central jet at high velocity an apparent density of 3-50 kg./N. cu. met.  During a first phase of the operation extending until the slag becomes foamy, oxygen is blown through the outer passage while the gas from the inner jet has an apparent density of 0.3 kg./N. cu. met. which is gradually increased as foaming develops.  Blowing through the outer passage is decreased or stopped when the slag foams and the pressure of the inner jet on the bath increased by bringing the nozzle nearer to the surface of the bath or increasing its lime content. Alternatively, when foaming begins or if it becomes excessive, the oxygen blown through the outer passage may be replaced with air or with oxygen mixed with carbon dioxide or water vapour while if it becomes too little, oxygen blowing may be resumed, as it may also a few moments before an intermediate slag removal. For the last few minutes at the end of the operation gases as above mentioned may be blown through the inner and outer passages so as to establish equilibrium between the melt and the slag, or an inert gas such as nitrogen or argon may be blown through the outer passage.  The process may be used in conjunction with a second slag which contains soda.  Specification 844,987 is referred to.
Patent GB-801852-A (GB)
Title: Improvements in or relating to circuit arrangements for producing temporally varyingmagnetic fields
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: H03K4/43
Filed: 1955-11-18
Abstract: 801,852. Impedance networks. RANK CINTEL, Ltd. Nov. 19, 1956 [Nov. 18, 1955], No. 33056/55. Class 40 (8). [Also in Group XL (c)] In a magnetic scanning circuit, for a cathode - ray tube, Group XL(c), accurate integration is obtained by feeding back a voltage proportional to that across the inductance of the deflection coils 4, 5, which are transformer coupled to the circuit. Section C<SP>1</SP>, R<SP>1</SP> corrects for the primary resistance and leakage inductance; C<SP>3</SP>, R<SP>3</SP> for the secondary resistance and leakage inductance, C<SP>2</SP>, R2 for the primary inductance and loss resistance and C4, R4 for the coil resistance. Expressions are given for the component values. A larger feedback voltage is provided by the circuit of Fig. 7, not shown, wherein C<SP>3</SP>, C<SP>4</SP> are combined into a single capacitor and R<SP>3</SP>, R4 are also combined into a single component which is connected to the lower side of the capacitor.
Patent GB-356561-A (GB)
IPC: F02F3/02
Filed: 1930-11-04
Abstract: 356,561. Pistons. KRAFTFAHRZEUGBEDARF KOMMANDIT - GES. SCHUTTLER & CO., 51, Chausseestrasse, Berlin. Nov. 4, 1930, No. 33123. Convention date, April 17. [Class 122 (i).] A piston provided with axial grooves s and cross slots d is constructed to lessen the flow of heat to the guide surfaces f, g thereof. The head is integral with the guide surfaces f which carry the gudgeon-pin bearings b strengthened by ribs i. Slots k are provided through the upper part of the wall of each groove. In a modification, similar grooves are provided at the bottom of the skirt. Holes additional to the slots k may be provided in the grooves s. In a further modification, oblong slots are arranged near the bottom of the grooves s which are shortened so that the lower end of the piston is unbroken. The bottom of the skirt may be made elastic by inclined slots. Specification 246,941, [Class 122 (i), Engine and like cylinders &c.], is referred to.
Patent GB-1424961-A (GB)
Title: Process for brominating methylchlorosilanes
IPC: C07F7/12
Filed: 1974-07-26
Abstract: 1424961 Bromination of methyl chlorosilanes BAYER AG 26 July 1974 [27 July 1973] 33153/74 Heading C3S Bromomethylchlorosilanes where n is 1 or 2 are obtained by mixing a methylchlorosilane with Cl 2  and Br 2  in the liquid phase in a first zone with exclusion of light and exposing the resulting solution, in a second zone, to radiation with initiates the photoreaction, gas being prevented from passing from the first zone to the second. Preferably the molar ratio of Cl 2  to Br 2  is at least 1À5 : 1 and the halogens together are 1-10 mol. per cent of the silane. In the examples (CH 3 ) 3 SiCl or (CH 3 ) 2 SiCl 2  is fed into a dark mixing vessel into which is bubbled 3 or 3.1 mol. per cent of Cl 2  and 1.5 or 1.2 mol. per cent of Br 2  respectively; the solution is passed into an illuminated reaction vessel and thence via a degassing unit, where HCl and HBr are removed, to a distillation column from which unreacted methyl chlorosilane is returned to the mixing vessel and the chloromethyl and bromomethyl methyl chlorosilanes are obtained, in similar amounts, as products.
Patent GB-337969-A (GB)
Title: Improvements relating to yarn balls
IPC: B65H55/00
Filed: 1929-11-02
Abstract: 337,969. Weidemann, L. P. Nov. 2, 1929. Balls of yarn &c.-A ball of yarn is so wound that basin shaped depressions c are formed on its ends surrounding the central opening. These depressions accommodate the thickened end portions d of the protective winding so that the finished package is flat on the ends. The main winding a is a universal winding, and preferably at a steep angle to the protective windings. Reference has been directed by the Comptroller to Specification 27236/02.
Patent GB-176102-A (GB)
Title: Improvements in and relating to stills
IPC: C10G7/00
Filed: 1920-11-26
Abstract: 176,102. Robertson, T. E., (Power Specialty Co.). Nov. 26, 1920. Hydrocarbons, distilling; separate heater and evaporator apparatus.-In fractionally distilling oil, the oil is pumped through a zig-zag tube 4 in the furnace roof and passes in succession through a number of banks of tubes 5 heated by the furnace gases. Between each set of tubes the oil passes into a vapour-separator 9 containing spreaders 13, 14. The vapour is collected by a pipe 16 and passes by a perforated pipe 21 carried by a float 20 to an outlet pipe 22. If oil accumulates in the base of the separator, the float 20 rises and closes the vapour outlet. The vapour pressure then rises until it is sufficient to remove the obstruction in the succeeding bank of tubes causing the accumulation.
Patent GB-370354-A (GB)
Title: Control device for simultaneous sound and picture printing
IPC: G03B1/12
Filed: 1931-02-14
Abstract: 370,354. Printing combined sound and picture films. DEBRIE, A. L. V. C., 111, Rue St. Maur, Paris. Feb. 14, 1931, No. 33495. Convention date, April 5, 1930. Divided on 370,112. [Class 40 (ii).] Relates to apparatus for photographically printing sound and picture records simultaneously on a film, either from separate negatives or from a combined negative record film, the films being moved intermittently through the picture printing device and uniformly through the sound-record printer. According to the invention, separate synchronous motors 1, 2 are provided for feeding the films through the sound-record printing and the picture printing devices respectively. The motors are mechanically independent during the printing operation, but are adapted to be connected together through a clutch 4 at the start and at the end of their run.
Patent GB-448672-A (GB)
Title: Improvements in or relating to electric detectors and other electrode systems
IPC: H01L21/10
Filed: 1935-12-04
Abstract: 448,672. Static contact rectifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Dec. 4, 1935, No. 33650. Convention date, Feb. 6. [Class 37] [See also Group XL] Insulating stable metal salts or oxides, which are difficultly soluble in water and retain their insulating properties when exposed to the atmosphere, are added to selenium, which is separated from another conductive electrode by an insulating layer. From 0À5 to 5 per cent by weight of the metallic compound, for example, 1 per cent of barium tungstate, is added with a size of grain less than 10 Á. The insulating additions form the blocking layer between the selenium and the conductive metallic electrode. Other suitable additions are barium sulphate, calcium sulphate, quartz, magnesia, alumina, and cryolite.
Patent GB-883728-A (GB)
Title: Improvements in the production of graft copolymers
IPC: C08F259/04
Filed: 1958-10-21
Abstract: Graft copolymers are produced by subjecting a polymer to high energy ionizing radiation in the presence of a monomer, the grafting being effected on a polymer which normally is not penetrated by the monomer, to form a graft polymer which is penetrable by the monomer by so adjusting the conditions of treatment and hence the polymerization rate of the monomer that the monomer is not fully consumed in the polymerization reaction before it has penetrated through the graft copolymer formed.  The polymer may be polytetrafluorethylene or polychlorotrifluoroethylene and the monomer may be methyl methacrylate, vinyl acetate, vinyl chloride, acrylonitrile, vinyl pyrrolidone, acrylamide, styrene, vinyl toluene, butadiene, isoprene, chloroprene or mixtures thereof.  Treatment conditions which may be adjusted include radiation intensity, the use of continued or intermittent radiation, the presence or absence of a solvent, and the temperature.  Specification 801,528 is referred to.
Patent GB-1463435-A (GB)
IPC: B65H57/28
Filed: 1975-08-13
Abstract: 1463435 Evening out wear in belt fibre delivery devices HEBERLEIN & CO AG 13 Aug 1975 [28 Aug 1974] 33695/75 Heading DID A fibre delivery belt 4 is preceded by a transversely reciprocating fibre guide 2, the reciprocation comprising a basic uniform component and an additional uniform component such that the reversal points are distributed across the belt and there are more reversal points than with either component alone. The basic component is generated by an eccentric groove 12 in a rotary disc to which is engaged by a pin 9'. Pin 9' is eccentrically located on a journal 8, this being rotated by a pinion 16 on another eccentric pin 9. This provides the additional component since journal 8 runs in bearings on the end of a rod 1 carrying the guide 2. Pinion 16 is driven by a further pinion 15 carried a pin 14 eccentrically mounted on a shaft 11 passing through the centre of disc 10. The ratio of teeth on pinions 15 and 16 is a fractional number greater than 2 whose numerator and denominator are preferably prime numbers between 11 and 113 inclusive. The period of circulation of belt 4 is different from the period of the basic component of reciprocation, but is dependent upon it. Further detail of the relative periods is given.
Patent GB-536008-A (GB)
Title: Improvements in, and connected with, advertising signs
IPC: G09F23/00
Filed: 1939-10-25
Abstract: 536,008. Changing signs. BERKELEY & YOUNG, Ltd., and GRUNDON, G. L. A. Oct. 25, 1939, No 33749/38. [Class 3 (i)] A glass or metal stencil c is illuminated from the rear by light from lamps a which passes through a convection current operated bladed far f located in the light path immediately above the lamp. A reflector e, which may be coloured and faceted, is disposed at the back d of the casing b.
Patent GB-1293870-A (GB)
Title: Preparation of cis-1-alkenyl phosphonic acids and their o-carboxyphenyl esters
Inventor: KOLLONITSCH JANOS
IPC: C07F9/6571
Filed: 1970-07-13
Abstract: 1293870 Cis-1-alkenyl phosphonic acid derivatives MERCK & CO Inc 13 July 1970 [14 July 1969] 33848/70 Heading C2P A cis- 1 -alkenyl phosphonic acid or o-carboxyphenyl ester thereof is prepared by (a) reacting a beta-gamma-alkynyl alcohol with a 2-halo-4- oxo - 1,3 - dioxa - 2 - phosphanaphthalene in an organic solvent to form a 2-alkynyloxy-4-oxo- 1,3 - dioxa - 2 - phosphanaphthalene, (b) thermally rearranging this product to give a 2-(1<SP>1</SP>,2<SP>1</SP>- alkadienyl) - 4 - oxo - 1,3 - dioxa - 2 - phosphanaphthalene-2-oxide, and then either (c) selectively catalytically hydrogenating this product to give a 2-(1<SP>1</SP>-cis-alkenyl)-4-oxo-1,3-dioxa-2- phosphanaphthalene-2-oxide, and (d) hydrolysing, or (e) hydrolysing the product of step (b) to give a 1,2-alkadienyl phosphonic acid or the o-carboxyphenyl ester thereof, and (e) selectively catalytically hydrogenating this product. The invention also comprises the o-carboxyphenyl ester of cis-1-propenylphosphonic acid. The intermediates 2-(1<SP>1</SP>-cis-propenyl)-4-oxo-1,3- dioxaphosphanaphthalene - 2 - oxide, orthocarboxyphenyl propadienylphosphonate and propadienylphosphonic acid may be isolated. The monobenzylamine salt of orthocarboxyphenyl cis - 1 - propenylphosphonate may be prepared by reacting the monoester with benzylamine. An orthocarboxyphenyl ester of a cis-1- alkenyl phosphonic acid may be converted to the free acid by heating in aqueous solution.
Patent GB-495602-A (GB)
Title: A window or door fastener
IPC: E05B15/00
Filed: 1937-12-08
Abstract: 495,602. Automatic catches. REEVES, W. E. Dec. 8, 1937, No. 33971. [Class 44] In a fastening for windows or doors having a drop-down handle 5 pivoted on a base-plate 1 mounted on the window or door so as to swing out at right-angles, a locking piece 6 coupled to the handle being adapted to coact with a catch 13 mounted on the frame, the locking piece is so constructed that when the handle is hanging freely it presents an inclined cam face 17 to the catch to effect automatic engagement by raising the handle, the length of the cam face being such that the locking piece rises in front of the catch when the handle falls. The catch 13 is tapered, the thinner edge 15 being at the bottom, and the locking piece 6 has a second cam face 8 which is eccentric with regard to the pivot 4, so that the base-plate 1 is drawn tightly against the vertical rear face of the catch 13 when a slight downward pressure is applied to the handle 5. The base-plate 1 and catch 13 have locating means in the form of a tapered pin 10 and a hole 16. The parts may be cast, forged, or pressed.
Patent GB-211284-A (GB)
Title: Improvements relating to rotors for dynamo-electric machinery
IPC: H02K3/51
Filed: 1922-12-13
Abstract: 211,284. Juhlin, G. A., Kuyser, J. A., Charlton, T. H., Baumann, K., and Metropolitan-Vickers Electrical Co., Ltd. Dec. 13, 1922. Coils and conductors.-In a high-speed alternating-current machine, the rotor coil-retaining ring or sleeve 4, Fig. 1, having its inner end supported from the core 1, is supported at its outer end by an auxiliary sleeve 10 of smaller diameter than the inside surface of the windings, the outer end of this sleeve being free and not engaging with the shaft; by this construction, deflection of the rotor shaft 3 will not cause relative movement between the end ring and the core. The ring 4 is shrunk on to a steel disc 8 which is secured to the sleeve by bolts 12. The sleeve 10 may be replaced by an annular row of bolts, which may be strengthened by one or more rings, or it may be integral with the rotor core. Fig. 4 shows a construction in which the end ring 4 is supported at its outer end by a resilient plate 18, which may be composite.